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Chrome DevTools: JavaScript CPU Profiling in Chrome 58

In Chrome 58, which is currently Canary, the Timeline panel has been renamed
to the Performance panel, the Profiles panel has been
renamed to the Memory panel, and the Record JavaScript CPU Profile feature
on the Profiles panel has been moved to a more hidden location.

The long-term goal is to remove the old JavaScript CPU Profiler, and
get everyone working with the new workflow.

This little migration guide shows you how to record a JS profile in the
Performance panel, and how the Performance panel's UI maps to the old
workflow that you're used to.

Accessing the old JavaScript CPU profiler

If you prefer the old "Record JavaScript CPU Profile" workflow that used to
be available on the Profiles panel, you can still access it like so: